V4 with V6 large gearcase??

xikxak

Petty Officer 1st Class
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Sep 16, 2004
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Best I can find this came on 100hp commercial(1984-90)120 hp(1985) and 140hp v4(1985) Has 15 tooth spline,4 3/4"gearcase.all other dims same as my 78 v4 140,bolt holes etc.can anyone help with identifying as I want to change it from xlong to long shaft.need part number for long(20") driveshaft. thanks
 

xikxak

Petty Officer 1st Class
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Sep 16, 2004
Messages
318
Re: V4 with V6 large gearcase??

That 15 tooth spline is for yhe prop.d/s spline is same as my v4. ds does not have key for pump impeller it has wedge. gear ratio seems to be 2/1 also is this a 2 piece driveshaft. trying to get info before I tear it down. thanks
 

walleyehed

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Jun 29, 2003
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6,767
Re: V4 with V6 large gearcase??

the w.p. inpellor assembly may be different, I'm not sure.<br />What exactly are you wanting to accomplish here so we are both on the same track.
 

xikxak

Petty Officer 1st Class
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318
Re: V4 with V6 large gearcase??

Im trying to convert from 25" shaft to 20 in" but dont know part numbers.
 

walleyehed

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Re: V4 with V6 large gearcase??

I don't have my books here to give you a P/N, but maybe someone else can... Good luck.
 

xikxak

Petty Officer 1st Class
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Messages
318
Re: V4 with V6 large gearcase??

Im hoping someone with the right motor can pass on the info as I wouldn't have the slightest idea which parts manual to get. thanks
 

xikxak

Petty Officer 1st Class
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Messages
318
Re: V4 with V6 large gearcase??

clarification:that 15 tooth spline is the propshaft.driveshaft is 20 tooth,same as my v4. thanks
 

walleyehed

Admiral
Joined
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Messages
6,767
Re: V4 with V6 large gearcase??

I would suggest calling a dealer and asking for the P/N for the drive shaft for a 1985 120-140 looper in 20". Tell them what you're trying to find.<br />Also, the water pump "may" be different in how the tube(s) are routed, and your shift rod is different, I believe, in design too.
 
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